Finding the Fourth Proportional to 210,692.54, 290,755.68 and 115,199.21
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Solution
The fourth proportional to 210,692.54, 290,755.68 and 115,199.21 is: 158,974.90
Step by Step Solution
- Step 1: Write the proportion equation
210,692.54 : 290,755.68 = 115,199.21 : x - Step 2: Convert to fraction form
210,692.54/290,755.68 = 115,199.21/x - Step 3: Cross multiply
210,692.54x = 290,755.68 × 115,199.21 - Step 4: Simplify right side
210,692.54x = 33,494,824,933.91 - Step 5: Solve for x
x = 33,494,824,933.91/210,692.54 - Step 6: Final answer
x = 158,974.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.